diff --git a/WHATSNEW b/WHATSNEW
index 608527474..6cd11da77 100644
--- a/WHATSNEW
+++ b/WHATSNEW
@@ -28,6 +28,10 @@ Other changes:
    and -providerArg command line options of keytool via new attributes.
    Bugzilla Report 65234
 
+ * signjar and verifyjar now supported nested <arg> elements for
+   command line arguments that are not supported explicitly by the
+   tasks via attributes.
+
 Changes from Ant 1.9.12 TO Ant 1.9.13
 =====================================
 
diff --git a/manual/Tasks/signjar.html b/manual/Tasks/signjar.html
index f6a7a376a..88bdb4380 100644
--- a/manual/Tasks/signjar.html
+++ b/manual/Tasks/signjar.html
@@ -238,7 +238,15 @@ block</td>
     <a href="exec.html#env">environment variables</a> </td>
     <td valign="top" align="center">No, and only one can be supplied</td>
   </tr>
- </table>
+  <tr>
+    <td valign="top">arg</td>
+    <td valign="top">Use this to specify a <code>keytool</code>
+    <a href="../using.html#arg">command line argument</a> not
+    explicitly supported via an attribute.
+    <em>since Ant 1.9.14</em>.</td>
+    <td valign="top" align="center">No</td>
+  </tr>
+</table>
 
 
 <h3>Examples</h3>
diff --git a/manual/Tasks/verifyjar.html b/manual/Tasks/verifyjar.html
index bf442b728..b2df42623 100644
--- a/manual/Tasks/verifyjar.html
+++ b/manual/Tasks/verifyjar.html
@@ -152,7 +152,15 @@ supported
     <a href="exec.html#env">environment variables</a> </td>
     <td valign="top" align="center">No, and only one can be supplied</td>
   </tr>
- </table>
+  <tr>
+    <td valign="top">arg</td>
+    <td valign="top">Use this to specify a <code>keytool</code>
+    <a href="../using.html#arg">command line argument</a> not
+    explicitly supported via an attribute.
+    <em>since Ant 1.9.14</em>.</td>
+    <td valign="top" align="center">No</td>
+  </tr>
+</table>
 
 
 <h3>Examples</h3>
diff --git a/src/main/org/apache/tools/ant/taskdefs/AbstractJarSignerTask.java b/src/main/org/apache/tools/ant/taskdefs/AbstractJarSignerTask.java
index b15d2bc9f..b81179728 100644
--- a/src/main/org/apache/tools/ant/taskdefs/AbstractJarSignerTask.java
+++ b/src/main/org/apache/tools/ant/taskdefs/AbstractJarSignerTask.java
@@ -19,11 +19,14 @@
 package org.apache.tools.ant.taskdefs;
 
 import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Vector;
 
 import org.apache.tools.ant.BuildException;
 import org.apache.tools.ant.Task;
 import org.apache.tools.ant.filters.LineContainsRegExp;
+import org.apache.tools.ant.types.Commandline;
 import org.apache.tools.ant.types.Environment;
 import org.apache.tools.ant.types.FileSet;
 import org.apache.tools.ant.types.Path;
@@ -123,6 +126,8 @@ public abstract class AbstractJarSignerTask extends Task {
      */
     private String providerName, providerClass, providerArg;
 
+    private List<Commandline.Argument> additionalArgs = new ArrayList();
+
     /**
      * Set the maximum memory to be used by the jarsigner process
      *
@@ -270,6 +275,16 @@ public abstract class AbstractJarSignerTask extends Task {
         this.providerArg = providerArg;
     }
 
+    /**
+     * Adds a nested &lt;arg&gt; element that can be used to specify
+     * command line arguments not supported via specific attributes.
+     *
+     * @since Ant 1.9.14
+     */
+    public void addArg(Commandline.Argument arg) {
+        additionalArgs.add(arg);
+    }
+
     /**
      * init processing logic; this is retained through our execution(s)
      */
@@ -351,6 +366,10 @@ public abstract class AbstractJarSignerTask extends Task {
         for (Environment.Variable variable : sysProperties.getVariablesVector()) {
             declareSysProperty(cmd, variable);
         }
+
+        for (Commandline.Argument arg : additionalArgs) {
+            addArgument(cmd, arg);
+        }
     }
 
     /**
@@ -473,4 +492,13 @@ public abstract class AbstractJarSignerTask extends Task {
     protected void addValue(final ExecTask cmd, String value) {
         cmd.createArg().setValue(value);
     }
+
+    /**
+     * add an argument to a command
+     * @param cmd command to manipulate
+     * @param arg argument to add
+     */
+    protected void addArgument(final ExecTask cmd, Commandline.Argument arg) {
+        cmd.createArg().copyFrom(arg);
+    }
 }
diff --git a/src/main/org/apache/tools/ant/types/Commandline.java b/src/main/org/apache/tools/ant/types/Commandline.java
index a1859ba79..77d953b24 100644
--- a/src/main/org/apache/tools/ant/types/Commandline.java
+++ b/src/main/org/apache/tools/ant/types/Commandline.java
@@ -182,6 +182,17 @@ public class Commandline implements Cloneable {
             this.suffix = suffix != null ? suffix : "";
         }
 
+        /**
+         * Copies settings from a different argument.
+         *
+         * @since Ant 1.9.14
+         */
+        public void copyFrom(Argument other) {
+            this.parts = other.parts;
+            this.prefix = other.prefix;
+            this.suffix = other.suffix;
+        }
+
         /**
          * Return the constituent parts of this Argument.
          * @return an array of strings.